<template>
  <div class="login-container">
    <el-form ref="ruleForm"
             :model="ruleForm"
             :rules="rules"
             class="login-form"
             auto-complete="on"
             label-position="left">
      <div class="title-container">
        <h3 class="title">登录</h3>
      </div>

      <el-form-item
        prop="username">
        <span class="svg-container">
          <svg-icon icon-class="user"/>
        </span>
        <el-input
          ref="username"
          v-model="ruleForm.username"
          placeholder="Username"
          name="username"
          type="text"
          tabindex="1"
          auto-complete="on"
        />
      </el-form-item>

      <el-form-item prop="password">
        <span class="svg-container">
          <svg-icon icon-class="password"/>
        </span>
        <el-input
          :key="passwordType"
          ref="ruleForm"
          v-model="ruleForm.password"
          :type="passwordType"
          placeholder="Password"
          name="password"
          tabindex="2"
          auto-complete="on"
          @keyup.enter.native="handleLogin('ruleForm')"
        />
        <span class="show-pwd" @click="showPwd">
          <svg-icon
            :icon-class="passwordType === 'password' ? 'eye' : 'eye-open'"/>
        </span>
      </el-form-item>

      <el-button :loading="loading" type="primary"
                 style="width:100%;margin-bottom:30px;"
                 @click.native.prevent="handleLogin('ruleForm')">登录
      </el-button>

      <div class="tips">
        <span style="margin-right:20px;">账户: admin</span>
        <span> 密码: admin123</span>
      </div>

    </el-form>
  </div>
</template>

<script>

export default {
  name: 'Login',
  data() {
    return {
      ruleForm: {
        username: 'admin',
        password: 'admin123'
      },
      rules: {
        username: [
          {required: true, message: '请输入用户名', trigger: 'blur'},
          {min: 4, max: 15, message: '长度在 4 到 15 个字符', trigger: 'blur'}
        ],
        password: [
          {required: true, message: '请输入密码', trigger: 'blur'},
          {min: 4, max: 15, message: '长度在 4 到 15 个字符', trigger: 'blur'}
        ]
      },
      loading: false,
      passwordType: 'password',
      redirect: undefined
    }
  },
  methods: {
    showPwd() {
      if (this.passwordType === 'password') {
        this.passwordType = ''
      } else {
        this.passwordType = 'password'
      }
    },
    handleLogin(formName) {
      this.$refs[formName].validate((valid) => {
        if (valid) {
          this.loading = true
          let url = 'http://localhost:8891/users/login';
          console.log('url = ' + url);
          let formData = this.qs.stringify(this.ruleForm);
          console.log('formData = ' + formData);
          this.axios.post(url, formData).then((response) => {
            let responseBody = response.data;
            if (responseBody.state == 20000) {
              this.$router.push({ path: this.redirect || '/' })
              this.$message({
                message: '登录成功！',
                type: 'success'
              });
              let jwt = responseBody.data;
              console.log('登录成功，服务器端响应JWT：' + jwt);
              localStorage.setItem('jwt', jwt);
              console.log('已经将JWT保存到localStorage');
              this.$store.dispatch('user/login', this.ruleForm).then(() => {
                this.$router.push({ path: this.redirect || '/' })
                this.loading = false
              })
            } else {
              console.log(responseBody.message);
            }
          });
        } else {
          console.log('error submit!!')
          return false
        }
      })
    }
  }
}
</script>

<style lang="scss">
/* 修复input 背景不协调 和光标变色 */
/* Detail see https://github.com/PanJiaChen/vue-element-admin/pull/927 */

$bg: #283443;
$light_gray: #fff;
$cursor: #fff;

@supports (-webkit-mask: none) and (not (cater-color: $cursor)) {
  .login-container .el-input input {
    color: $cursor;
  }
}

/* reset element-ui css */
.login-container {
  .el-input {
    display: inline-block;
    height: 47px;
    width: 85%;

    input {
      background: transparent;
      border: 0px;
      -webkit-appearance: none;
      border-radius: 0px;
      padding: 12px 5px 12px 15px;
      color: $light_gray;
      height: 47px;
      caret-color: $cursor;

      &:-webkit-autofill {
        box-shadow: 0 0 0px 1000px $bg inset !important;
        -webkit-text-fill-color: $cursor !important;
      }
    }
  }

  .el-form-item {
    border: 1px solid rgba(255, 255, 255, 0.1);
    background: rgba(0, 0, 0, 0.1);
    border-radius: 5px;
    color: #454545;
  }
}
</style>

<style lang="scss" scoped>
$bg: #2d3a4b;
$dark_gray: #889aa4;
$light_gray: #eee;

.login-container {
  min-height: 100%;
  width: 100%;
  background-color: $bg;
  overflow: hidden;

  .login-form {
    position: relative;
    width: 520px;
    max-width: 100%;
    padding: 160px 35px 0;
    margin: 0 auto;
    overflow: hidden;
  }

  .tips {
    font-size: 14px;
    color: #fff;
    margin-bottom: 10px;

    span {
      &:first-of-type {
        margin-right: 16px;
      }
    }
  }

  .svg-container {
    padding: 6px 5px 6px 15px;
    color: $dark_gray;
    vertical-align: middle;
    width: 30px;
    display: inline-block;
  }

  .title-container {
    position: relative;

    .title {
      font-size: 26px;
      color: $light_gray;
      margin: 0px auto 40px auto;
      text-align: center;
      font-weight: bold;
    }
  }

  .show-pwd {
    position: absolute;
    right: 10px;
    top: 7px;
    font-size: 16px;
    color: $dark_gray;
    cursor: pointer;
    user-select: none;
  }
}
</style>
